Hybrid Pile-Drain System to Stabilise Railways Built on Soft Soils

混合桩排水系统可稳定软土上修建的铁路

• 批准号: LP230100199
• 负责人: Prof Buddhima Indraratna
• 金额: $ 30.61万
• 依托单位: University of Technology Sydney
• 依托单位国家: 澳大利亚
• 项目类别: Linkage Projects
• 财政年份: 2024
• 资助国家: 澳大利亚
• 起止时间: 2024-01-01 至 2026-12-31
• 项目状态: 未结题
• 来源: https://dataportal.arc.gov.au/RGS/Web/Grants/LP230100199
• 关键词: Hybrid; Pile; Drain; System; Stabilise

Australian coastal soils often pose significant challenges in the design and construction of railways. The project aims to develop a novel hybrid system of pipe piles & prefabricated vertical drains installed to prevent soft foundation soil (subgrade) from excessive yielding under prolonged cyclic loading by heavy-haul trains. Using large-scale physical model simulations and field trials supported by numerical analysis of soil-pile-drain interaction mechanisms, this innovative concept will be examined to establish a user-friendly design methodology. For rail operators, the outcomes will generate substantially reduced maintenance costs, while extending the longevity of track infrastructure to ensure faster and heavier trains of the future.

澳大利亚沿海土壤常常给铁路的设计和施工带来重大挑战。该项目旨在开发一种新型管桩和预制垂直排水管混合系统，以防止软地基土壤（路基）在重载列车长期循环荷载下过度屈服。利用大规模物理模型模拟和现场试验，并通过土-桩-排水相互作用机制的数值分析，对这一创新概念进行检验，以建立一种用户友好的设计方法。对于铁路运营商而言，其结果将大幅降低维护成本，同时延长轨道基础设施的使用寿命，以确保未来列车速度更快、重量更重。